Hose-clamp.



5.1. ROHRBACHR.

HOSE CLAMP.

APPLICATION HLED ri. 2o. 1918.

' Patented Feb. 18,1919.

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EDWARD J'. ROHRBACHER, OF SEATTLE, WASHINGTON.

y Hoen-CLAMP.

Specification of Letters Patent.

Patented Een. is, i919.

Application filed February 20, 1918. Serial No. 218,198.

To all 'whom t may concern:

Be it known that I, EDWARD J. Rome EAGHER, a citizen of the UnitedStates, and resident of the city of Seattle, county of King, and Stateof Washington, have 1nvented certain new and useful Improvements inHose-Clamps, of which the following is a specication.

My invention relates to hose clamps and consists of a clamp which isprovided with means whereby it may interlockingly engage parts thereofto bind it in place on a hose and which will t upon hose of considerabledifference in size.

The object of my invention is to provide a hose clamp of cheap -irstcostand which may be applied and locked without using any unusual or specialtools, and which will fit various sizes of hose.

My invention consists of the novel parts and combinations of arts whichwill be herein set forth and t en particularly deiined by the claims.

In the accompanying drawings I have shown my invention in the type ofconstruction which is now most preferred by me.

Figure 1 is a face view of the blank from which the clamp is made. v

Fig. 2 shows a face view and Fig. 3 an edge view of a clamp .incondition for applying to a hose, a portion of the head being in sectionin Fig. 3. a

Fig. 4 shows a view of a clamp as applied about a hose.

Fig. 5 is a face view of the head of a modified type of construction.

Fig. 6 shows a strap of the construction shown in Fig. 5, as it wouldappear applied to a hose.

Figs. 7 and 8 represent respectively in completed and in blank form, afurther modification in the structure of the head.

The strap which forms my hose clamp .is composed of thin sheet metal.The main body thereof, 1, has tongues 10 stamped therefrom, alternatingwith holes 11. These tongues extend toward the head 2.

The head 2 has a hole 20, of a width to receive the strap body 1, theouter edge of this hole, that is at the edgewhich is away from the bodyof the strap, being rolled over backward, as is clearly shown in Figs.2, 3 and 4. This rolled-over edge 21 may be simply the tongue which isstamped from the hole 20.

This provides a rounded and enlarged surface over which to draw thestrapwhen securing the clamp in place on a hose.

I may also bend the side bars 3 of th head up, as is'shown in the samefigures, and force their outer ends or corners, 30, under y the outerside of the bent tongue 21, thus re- `inforcing and strengthening it.

In use, the body l of the strap is passed about the hose with the sidetoward which the tongues 10 are pressed, outward. The end of the strapis passed through the hole 20 and bent backward, drawing it taut andforcing the end down untilthe end of one or more of the tongues eitherinterlock with the projecting tongues of that part of the strap whichlies against the hose, or one of the holes 11, as is shown in Fig. 2.

The strap shown in Figs. 5 and 6 differs from that before described inhaving a pin 4 held by bending the side bars 3 over its ends. These sidebars 3 may also have side extensions 31 at their ends, these beingplaced on the inner side as it is applied to the hose. These lugs 31will interlockingly engage the strap 1 to prevent further stretch, incase the strain is sufiicient to cause the eyes to open. In Fig. 5 theshape of the blank at the head end is shown by dotted lines.

In applying the hose clamp the strap is passed through the hole 20 inthe head, drawn taut and bent back until either two tongues interlock ora tongue enters a hole 11. To draw the strap tight a nail may be passedthrough a hole of the outer layer and engaged with a hole in the innerlayer, the nail acting as a lever to draw the strap tight.

The strap head shown in Figs. 7 and 8, rather closely resembles thatshown in Figs. 5 and 6. In outline the blank, before bending, is thesame as that of Fig. 5, with the addition of outwardly projecting lugs32. In bending up the side bars 3 to hold the pin 4, this is done at apoint which will bring the ends of the lugs 31 and 32 just outside ofthe inner edge of the hole 20 and the lugs 31 and 32 are bent over theside bars 3, and clamped thereon, as is shown in Fig. 7. This greatlystrengthens the eyes which hold the pin 4.

What I claim as my invention is:

1. A hose clamp comprising a strap-like body of sheet metal providedwith an entongues stamped therefrom"'and'p'ointiiig toward the head andthe side of the head farthest from the having its edge rolled over toform a rounded edge for the hole, and the side bars of the head beingthe-ends of the said rolledouter edge of the hole.

2. A hose clampV comprising a strap of sheet metal vhaving its bodyprovided with means for interlocking the parts thereof When bent backupon itself and a transverse bar carriedA by one end of thebody aboutwhich .to passthe body, said bar having a diameter Which is largerelative to the thickness Vof the metalv composing the body.

3. 'Ahose clarpof sheet Inetalprovided with means for interlocking themain body ther'ef When bent back upon itself and a transverse barcarried by one end of the body about which to pass the body, said barbenty up and with their outer ends bent under haviiiga diameter Which islarge relative t0 thethickness of the metal, Which composes the body,the lbody of .the strap having holes adapted to receive a nail or likebar to actl as a lever to draw the kstra-p over said transverse bar. Y

Signed at Seattle, Washington, this 1-1th day of February, 1918.

' EDWARD'4 J. ROHRBACHER.

Copies of this patent may be obtained forive cents each, byaddressingrthe Commissioner of Iatents,

' Washington, D. C.

